Plant Growth-Promoting Rhizobacteria Enhance Abiotic Stress Tolerance in Solanum tuberosum Through Inducing Changes in the Expression of ROS-Scavenging Enzymes and Improved Photosynthetic Performance

被引：1
作者：
Mayank Anand Gururani
Chandrama Prakash Upadhyaya
Venkidasamy Baskar
Jelli Venkatesh
Akula Nookaraju
Se Won Park
机构：
[1] Konkuk University,Department of Molecular Biotechnology, School of Life & Environmental Sciences
[2] Guru Ghasidas Central University,Department of Botany
[3] Chonnam National University,Department of Bioenergy Science and Technology
来源：
Journal of Plant Growth Regulation | 2013年 / 32卷
关键词：
Abiotic stress; PGPR; Photosynthesis; ROS;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this report we address the changes in the expression of the genes involved in ROS scavenging and ethylene biosynthesis induced by the inoculation of plant growth-promoting rhizobacteria (PGPR) isolated from potato rhizosphere. The two Bacillus isolates used in this investigation had earlier demonstrated a striking influence on potato tuberization. These isolates showed enhanced 1-aminocyclopropane-1-carboxylic acid deaminase activity, phosphate solubilization, and siderophore production. Potato plants inoculated with these PGPR isolates were subjected to salt, drought, and heavy-metal stresses. The enhanced mRNA expression levels of the various ROS-scavenging enzymes and higher proline content in tubers induced by PGPR-treated plants contributed to increased plant tolerance to these abiotic stresses. Furthermore, the photosynthetic performance indices of PGPR-inoculated plants clearly exhibited a positive influence of these bacterial strains on the PSII photochemistry of the plants. Overall, these results suggest that the PGPR isolates used in this study are able to confer abiotic stress tolerance in potato plants.
引用
收藏
页码：245 / 258
页数：13
相关论文
共 272 条
[1]  
Bai Y(2003)Enhanced soybean plant growth resulting from coinoculation of Crop Sci 43 1774-1781
[2]  
Zhou X(2008) strain with Phytopathology 98 666-672
[3]  
Mith DL(1973)Protection against pathogen and salt stress by four plant growth-promoting rhizobacteria isolated from Plant Soil 39 205-207
[4]  
Barriuso J(2005) sp. on FEMS Microbiol Ecol 51 215-229
[5]  
Ramos SB(1987)Rapid determination of free proline for water-stress studies Anal Biochem 161 559-566
[6]  
Gutierrez Manero FJ(1987)Endophytic and ectophytic potato-associated bacterial communities differ in structure and antagonistic function against plant pathogenic fungi Planta 170 489-504
[7]  
Bates LS(1996)Assaying for superoxide dismutase activity: some large consequences of minor changes in conditions Photosynth Res 48 189-196
[8]  
Waldren RP(2010)Photon yield of O Braz J Microbiol 41 899-906
[9]  
Teare ID(2003) evolution and chlorophyll fluorescence at 77 K among vascular plants of diverse origins J Plant Nutr 26 1801-1814
[10]  
Berg G(2005)Heat stress induces in leaves an increase of the minimum level of chlorophyll fluorescence F0: a time-resolved analysis J Plant Nutr 28 1853-1865
12345678910